CN107464993B - The monopulse antenna array of integrated broadband miniaturization and poor phase comparing network - Google Patents
The monopulse antenna array of integrated broadband miniaturization and poor phase comparing network Download PDFInfo
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- CN107464993B CN107464993B CN201710549497.6A CN201710549497A CN107464993B CN 107464993 B CN107464993 B CN 107464993B CN 201710549497 A CN201710549497 A CN 201710549497A CN 107464993 B CN107464993 B CN 107464993B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention devises the monopulse antenna array of a kind of integrated broadband miniaturization and poor phase comparing network, including minimized wide-band plane and poor phase comparing network and plane Yagi spark gap array antenna；Minimized wide-band plane and poor phase comparing network are made of two-sided parallel strips, including first order network and second level network, first order network includes first order annular coupler, second level network includes two second level annular couplers, coupler annular section is provided with phase inverter, is formed and is electrically connected by plated-through hole between phase inverter upper layer and lower layer.Invention increases the bandwidth with poor phase comparing network, and have smaller structure size, divide the size of feeding network also small than general T-type function, while not needing feeding network to the transition structure between antenna；Overall construction is enormously simplified using planar structure, difficulty of processing is low, is easy to be mass produced, and be easy to integrated with other planar circuits, is especially suitable for being integrated in radar system, installation and debugging are extremely convenient.
Description
Technical field
The invention belongs to antenna technical field, the antenna being related in monopulse radar system is more specifically to be related to
A kind of monopulse antenna array of integrated broadband miniaturization and poor phase comparing network.
Background technique
Monopulse radar is a kind of high-accuracy tracking beam radar.Monopulse radar can within a pulse period,
The whole directional informations and range information of target are obtained, orientation is precisely and interference resistance is strong.Monopulse antenna is as pulse thunder
The key component reached has been largely fixed the performance of monopulse radar, therefore has important meaning to the research of monopulse antenna
Justice.Traditional monopulse radar mostly uses parabola antenna, Cassegrain antenna etc., and corresponding phase comparing network also more to be adopted
With metal waveguide structure, therefore that there are volumes is big, weight is big, structure is complicated, at high cost and be not easy integrated with other planar circuits
The shortcomings that.Further, since tradition and the bandwidth of poor phase comparing network are narrow, entire aerial array or even radar system will limit
The bandwidth of system.
Summary of the invention
To solve the above problems, the present invention devises compact-sized one kind, broadband, is easily integrated and lower production costs
Plane monopulse antenna.
In order to achieve the above object, the invention provides the following technical scheme:
The monopulse antenna array of integrated broadband miniaturization and poor phase comparing network, including minimized wide-band plane and difference
Phase comparing network and plane Yagi spark gap array antenna array；The minimized wide-band plane and poor phase comparing network are by two-sided flat
Row band line is constituted, including first order network and second level network, first order network include first order annular coupler, second level net
Network includes two second level annular couplers, and annular couplers at different levels all have four ports, and coupler annular section is provided with
Phase inverter passes through plated-through hole between phase inverter upper layer and lower layer and forms electrical connection, two inputs of first order annular coupler
With realization and wave beam in turn is mutually exported, another realizes constant amplitude anti-phase output and then realizes difference beam the realization constant amplitude of port one,
Second level annular coupler be constant amplitude with mutually export, two output ports of first order annular coupler respectively with second level network
In two second level annular couplers form electrical connection；The plane Yagi spark gap array antenna includes director dipole and reflecting plate.
Further, trapezoidal open stub is provided in the annular coupler.
Further, the trapezoidal open stub is four, is uniformly arranged in annular coupler.
Further, the first order annular coupler has two kinds of output modes of the same phase/reverse phase of constant amplitude.
Compared with prior art, the invention has the advantages that and the utility model has the advantages that
1. being increased and poor phase comparing network by using a kind of New Ring-like Type coupler of integrated inverter structure
Bandwidth solves the problems, such as and poor phase comparing network narrowband.
2. having smaller structure size, divide the size of feeding network also small than general T-type function, while not needing to feed
Network is to the transition structure between antenna.
3. enormously simplifying overall construction using planar structure, difficulty of processing is low, is easy to be mass produced, and be easy to it
Its planar circuit is integrated, is especially suitable for being integrated in radar system, installation and debugging are extremely convenient.
4. antenna only uses single-layer medium plate and upper layer and lower layer metal backing and a small amount of plated-through hole to constitute, medium in example
Plate uses FR4, cheap, and the cost of entire antenna is effectively reduced.
Detailed description of the invention
Fig. 1 is that integrated broadband provided by the invention miniaturization and the monopulse antenna array structure of poor phase comparing network show
It is intended to.
Fig. 2 is annular coupler schematic perspective view.
Fig. 3 is annular coupler upper layer and lower layer separated position schematic diagram, wherein (a) and (b) is respectively first layer and second
Layer schematic diagram.
Fig. 4 is phase inverter schematic perspective view.
Fig. 5 is the size indication figure of single Yagi antenna unit and annular coupler.
Fig. 6 is the obverse and reverse structural schematic diagram of a monopulse antenna array.
Fig. 7 is the test result of Fig. 6 antenna input S parameter.
Fig. 8 be the face E of Fig. 6 antenna, H surface radiation Pattern measurement as a result, wherein (a) be and wave beam (b) be difference beam.
Description of symbols:
101- annular coupler, 102- phase inverter, 103- plated-through hole, the trapezoidal open stub of 104-, 105- are guided into
Oscillator, 106- reflecting plate, 107- dielectric substrate.
Specific embodiment
Technical solution provided by the invention is described in detail below with reference to specific embodiment, it should be understood that following specific
Embodiment is only illustrative of the invention and is not intended to limit the scope of the invention.
As shown in Figure 1, the monopulse antenna array of integrated broadband miniaturization and poor phase comparing network, including miniaturization are wide
Band plane and poor phase comparing network and plane Yagi spark gap array antenna.Wherein minimized wide-band plane and poor phase comparing network by
Multiple small-sized Wideband miniaturization annular coupler (lower referred to as annular coupler 101) compositions, due to introducing phase inverter,
The whole network two-sided parallel strips structure symmetrical using upper/lower layer metallic.
101 structure of annular coupler is as shown in Figure 2 to 4, and coupler annular section is provided with phase inverter 102, such as Fig. 4 institute
Show, plated-through hole 103 is equipped between phase inverter upper layer and lower layer, which passes through 2 metallization in two-sided parallel strips
Through-hole 103 makes the signal of transmission line and ground exchange to realize that reverse phase, i.e. phase increase by 180 °, and common annular coupler is logical
180 ° of transmission line is crossed to realize, coupler new construction just saves the size of 180 ° of transmission lines in this way in the present invention.While this
Kind of phase inverter can provide the bandwidth more widened, so that annular coupler is more than traditional annular coupler bandwidth in the present invention
It is wide.In addition, being additionally provided with four trapezoidal open stubs 104 in 101 ring-shaped inner part of annular coupler, open stub is lesser
One end is uniformly distributed in annular coupler along ring towards annular center, four trapezoidal open stubs 104.It needs to illustrate
Be, the shape of trapezoidal open stub 104 be not be it is regular trapezoidal, since its biggish one end is on ring, big end edge
Edge is arc.Trapezoidal open stub design enables the smaller of annular coupler.Test result shows compared to the ring-like coupling of tradition
Clutch, the annular coupler in the present invention is having a size of original 10%, and relative bandwidth reaches 80%.Annular coupler 101
There are two types of operating mode, one is constant amplitudes with mutually exporting, and can be used for the power division network of aerial array in this way；Another kind is constant amplitude
Anti-phase output, may be implemented in this way 180 ° of phase phase difference and poor phase comparing network.Specifically, as shown in Figure 1, annular coupling
Clutch tool is there are four when port, respectively port 1, port 2, port 3, the input of 4,1 port of port, and 2,3 port constant amplitudes are the same as mutually defeated
Out, 4 port isolation；When 4 ports input, 2,3 port constant amplitude anti-phase outputs, 1 port isolation.Isolated port connects the guarantee of 50 Ω resistance
Matching.
Based on this minimized wide-band annular coupler, minimized wide-band and poor phase comparing network packet that the present invention designs
First order network and second level network are included, port one (Port1) input is and wave beam, port two (Port2) input are difference beam,
As shown in Figure 1.Second level network is constant amplitude with mutually output.Specifically, first order network includes first order annular coupler, the
Two grade network includes two second level annular couplers, and the first order and second level annular coupler structure are knot described in leading portion
Structure.2,3 ports of first order annular coupler respectively with 1 shape of port in the network of the second level in two second level annular couplers
At electrical connection, 1,4 ports are input port, are constant amplitude when port 1 inputs with mutually exporting, and the input of port 4 is that constant amplitude reversely exports,
Port 4 in the annular coupler of the second level is isolated and connects 50 Ω resistance.
Plane Yagi spark gap array antenna includes seven director dipoles 105 and a pair of of reflecting plate 106, and the gain of single antenna reaches
10dBi, and the relative bandwidth of antenna element reaches 25%.Group battle array aft antenna reaches 14dBi, difference beam gain with beam gain
12.5dBi, null 28dB.
Such as the complete monopulse antenna schematic diagram that Fig. 1 is integrated broadband miniaturization and poor phase comparing network, entire antenna
Array is arranged on dielectric substrate 107, and filled black is front description in figure, and black oblique line is reverse side pattern, first order annular
Coupler 101 is realized and difference compares；The second level is constant amplitude with mutually exporting, and realizes the effect of power division network.Usual feeding network
Monopulse antenna needs the sum from two-sided parallel strips-microstrip line-coaxial fitting conversion, the present invention due to applying new construction
Poor phase comparing network, it is only necessary to from two-sided parallel strips-coaxial fitting, eliminate intermediate conversion circuit.Antenna port one
(Port1) input is and wave beam, port two (Port2) input are then difference beam.
Implement data:
The size of single Yagi antenna unit and the size of annular coupler are shown in Fig. 5, the following table 1 is a pulse
The specific size of aerial array.
| Parameter | It is worth (mm) | Parameter | It is worth (mm) | Parameter | It is worth (mm) | Parameter | It is worth (mm) |
| W50 | 2 | Ld2 | 30 | Ld4 | 28 | Ld6 | 28 |
| Lref | 30 | Wd2 | 8 | Wd4 | 8 | Wd6 | 8 |
| Wref | 14 | Ls2 | 15 | Ls4 | 17 | Ls6 | 18 |
| Ds | 3 | Ld3 | 28 | Ld5 | 28 | Ld7 | 29 |
| Wm | 6 | Wd3 | 8 | Wd5 | 8 | Wd7 | 9 |
| Lm | 19.5 | Ls3 | 17 | Ls5 | 17 | Ls7 | 20 |
| Ld | 23 | W1 | 1.9 | L2 | 4 | L1 | 5.6 |
| Ld1 | 28 | W2 | 5.95 | ds | 0.1 | Wa | 75 |
| Wd1 | 6 | Ls1 | 12.5 | Ws | 0.4 | R | 0.05 |
Fig. 6 is the structural schematic diagram of the aerial array.Entire aerial array is produced on medium base using planar circuit technique
On piece.Dielectric substrate uses the dielectric constant with a thickness of 1mm as 4.4 FR4 copper clad plate in example.Fig. 7 is in actual antennas
Two input ports at S parameter test result.Fig. 8 is the radiation pattern with difference beam.
The technical means disclosed in the embodiments of the present invention is not limited only to technological means disclosed in above embodiment, further includes
Technical solution consisting of any combination of the above technical features.It should be pointed out that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (2)
1. the monopulse antenna array of integrated broadband miniaturization and poor phase comparing network, it is characterised in that: wide including miniaturization
Band plane and poor phase comparing network and plane Yagi spark gap array antenna array；The minimized wide-band plane and poor phase bit comparison net
Network is made of two-sided parallel strips, including first order network and second level network, and first order network includes the coupling of first order annular
Device, second level network include two second level annular couplers, and annular couplers at different levels all have four ports, coupler annular
Part is provided with phase inverter, is formed and is electrically connected by plated-through hole between phase inverter upper layer and lower layer, first order annular coupler
Two input ports, one realization constant amplitude with mutually exporting and then realizing and wave beam, another realizes constant amplitude anti-phase output and then reality
Existing difference beam, second level annular coupler are constant amplitude with mutually exporting, two output ports of first order annular coupler respectively with
Two second level annular couplers form electrical connection in the network of the second level；The plane Yagi spark gap array antenna include director dipole and
Reflecting plate；The annular coupler ring-shaped inner part is additionally provided with four trapezoidal open stubs, and four trapezoidal open stubs exist
It is uniformly distributed in annular coupler along ring, the lesser one end of open stub is towards annular center, and biggish one end is on ring.
2. the monopulse antenna array of integrated broadband miniaturization and poor phase comparing network according to claim 1, special
Sign is: the first order annular coupler has constant amplitude two kinds of output modes of same phase/reverse phase.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710549497.6A CN107464993B (en) | 2017-07-07 | 2017-07-07 | The monopulse antenna array of integrated broadband miniaturization and poor phase comparing network |
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| CN201710549497.6A CN107464993B (en) | 2017-07-07 | 2017-07-07 | The monopulse antenna array of integrated broadband miniaturization and poor phase comparing network |
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| CN107464993A CN107464993A (en) | 2017-12-12 |
| CN107464993B true CN107464993B (en) | 2019-08-02 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112748426B (en) * | 2020-12-25 | 2022-10-11 | 电子科技大学 | Monopulse sum-difference network for long-distance high-resolution radar system |
| CN113703156A (en) * | 2021-08-23 | 2021-11-26 | 电子科技大学 | Quasi-optical monopulse antenna based on reflective phase correction mirror |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107233A (en) * | 1990-10-15 | 1992-04-21 | Hewlett-Packard Company | Amplitude correction of field coupled varactor tuned filters |
| CN1937316A (en) * | 2006-10-20 | 2007-03-28 | 东南大学 | Single-pulse chip integrated waveguide slot array antenna |
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2017
- 2017-07-07 CN CN201710549497.6A patent/CN107464993B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107233A (en) * | 1990-10-15 | 1992-04-21 | Hewlett-Packard Company | Amplitude correction of field coupled varactor tuned filters |
| CN1937316A (en) * | 2006-10-20 | 2007-03-28 | 东南大学 | Single-pulse chip integrated waveguide slot array antenna |
Non-Patent Citations (1)
| Title |
|---|
| SIW-Fed Yagi Antenna and Its Application on Monopulse Antenna;Xiong Zou、Chuang-Ming Tong等;《IEEE Antennas and Wireless Propagation Letters》;20140529;第13卷;1035-1038 |
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| CN107464993A (en) | 2017-12-12 |
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